Carl Vilhelm Mohn, son of Vilhelm Mohn, was born on March 18, 1846 in Stokke and died in 1912 in Kristiania at the age of 65. He married Catharina Henrikke Mohn, daughter of Balthazar Johan Flottman Mohn and Henriche Meltzer, on October 20, 1874 in Bergen. She was born on March 10, 1847 in Bergen and died on February 4, 1924 in Oslo at the age of 76.

Antonia Henrikke “Tonny” Mohn, daughter of Carl Vilhelm Mohn and Catharina Henrikke Mohn, was born on December 9, 1875 in Tønsberg and died on November 16, 1927 at the age of 51. She married Thomas Neumann, son of Thomas Neumann and Caroline Walesca Carlsen, on September 28, 1899 in Kristiania. He was born on April 2, 1871 in Aaskollen and died in 1949 in Fagerborg at the age of 77.